U4 Family Product Manual, Rev. D 25
Word Description Value
0
Configuration information:
Bit 15: 0 = ATA; 1 = ATAPI
Bit 7: removable media
Bit 6: removable controller
Bit 0: reserved
0C5AH
1 Number of logical cylinders:
ST32112A = 4,192
ST34311A = 8,944
ST36421A = 13,330
ST38421A = 16,368
1060H
(ST32112A)
22F0H
(ST34311A)
3412H
(ST36421A)
3FF0H
(ST38421A)
2 ATA-reserved 0000H
3 Number of logical heads:
ST32112A = 16
ST34311A = 15
ST36421A = 15
ST38421A = 16
10H
(ST32112A)
(ST38421A)
0FH
(ST34311A)
(ST36421A)
4 Retired 0000H
5 Retired 0000H
6 Number of logical sectors per logical
track: 63 003FH
7–9 Retired 0000H
10–19 Serial number: (20 ASCII characters,
0000H = none) ASCII
20 Retired 0000H
21 Retired 0200H
22 Obsolete 0004H
23–26 Firmware revision (8 ASCII character
string, padded with blanks to end of
string)
x.xx